MB-100: bump ns_server:get timeout
MB-100: bump ns_server:get timeout

Because sometimes xdcr and views could be abused to such extent that
even prioritized ns_config may have issues serving requests quickly
enough.

Change-Id: Ife261ce77bd80b6e815343b30a239ed7c54fd2a2
Reviewed-on: http://review.couchbase.org/27584
Tested-by: Aliaksey Kandratsenka <340b8e09ca65cd3fc686427fcfed17e87eaf61e2@gmail.com>
Reviewed-by: Aliaksey Artamonau <3c875bcfb3adf2a65b2ae7686ca921e6c9433147@gmail.com>

mschoch/ns_server,t3rm1n4l/ns_server,membase/ns_server,nimishzynga/ns_server,vzasade/ns_server,ceejatec/ns_server,t3rm1n4l/ns_server,mschoch/ns_server,ceejatec/ns_server,membase/ns_server,daverigby/ns_server,ceejatec/ns_server,ceejatec/ns_server,membase/ns_server,membase/ns_server,nimishzynga/ns_server,vzasade/ns_server,nimishzynga/ns_server,vzasade/ns_server,membase/ns_server,daverigby/ns_server,t3rm1n4l/ns_server,nimishzynga/ns_server,ceejatec/ns_server,mschoch/ns_server,mschoch/ns_server,nimishzynga/ns_server,mschoch/ns_server,nimishzynga/ns_server,daverigby/ns_server,ceejatec/ns_server,membase/ns_server,daverigby/ns_server,daverigby/ns_server,t3rm1n4l/ns_server,vzasade/ns_server,mschoch/ns_server,t3rm1n4l/ns_server